William left England in 1854 with his parents, Thomas and Jane (Christon) Fisher. After a six week voyage they landed at New Orleans on May 29 and arrived Salt Lake City on October 28, 1854.
William was one of the first Pony Express riders hired by Howard Egan in 1860 and was assigned to ride the section between Ruby Valley and Shell Creek, Nevada. In July of that year he was transferred to the section between Salt Lake City and Rush Valley.
After the Pony Express stopped running, he worked for the Holladay Overland Mail Company and later was foreman of a construction crew on the Central Pacific Railroad. He was a pioneering merchant in Richmond Utah when he "called" to go to Oxford Idaho in 1876. He became the first LDS Bishop in 1877. He owned and operated the WF Fisher "People's Store" (See photo). He held many public positions such as Assessor & Tax Collector in the town and he was also Secretary of the Idaho Territorial Convention. He was also admitted to the bar in Idaho and practice in the Willard Crawford & W. F. Fisher, law, land, mining and collections office. In 1890 he bought a set of dentist's extraction instruments and started pulling teeth for a living. He moved to Rigby, Idaho, in 1918.

Bio info from
Loose Moose and John Graham

Other known children of William & Millenium Fisher
William Edgar born Nov 21 1861 Died Jan 30 1932
Linnie May (Palmer) born July 4 1864 Died July 22 1939
Thomas Milo born Aug 15 1866 Died Jan 23 1873
John Erastus born Sept 29 1868 Died Nov 28 1869
Roy Christon born Sept 2 1875 Died July 29 1877
Stella Josephine (Brossard) born Jan 4 1880 Died Dec 5 1960
Ray Homer born Mar 9 1883 Died Apr 25 1952

Other wife of William Frederick Fisher
Harriet Hougan married 23 Oct 1871

Known children of William & Harriet Fisher
Albert Clarance born Feb 8 1873 Died 1927
Harriet (Hattie) Christiansen born Aug 6 1875 Died 1957
Joseph Heber born June 1880 Died 1881
Lorena (Anderson) born Jan 3 1885 Died 1939